CN218096719U - Gas storage device, compressor system, refrigerating system and air conditioning unit - Google Patents

Abstract

The present disclosure relates to a gas storage device, compressor system, refrigerating system and air conditioning unit, wherein, gas storage device includes: the first opening is positioned in the area, close to the bottom surface, of the shell and used for introducing a first refrigerant in a gas-liquid mixed state at a first temperature; the second opening is positioned in the bottom area of the shell and used for allowing the liquid refrigerant separated from the first refrigerant to flow out; the third opening is positioned in the top area of the shell and used for allowing the gaseous refrigerant separated from the first refrigerant to flow out; and the heat exchanger is positioned in the shell and is arranged on the side wall of the shell, the heat exchanger is provided with a first flow channel, a fourth opening and a fifth opening, the fourth opening is communicated with the first flow channel, a second refrigerant with a second temperature is introduced into the first flow channel to exchange heat with the first refrigerant flowing through the heat exchanger, the fifth opening is used for allowing the second refrigerant after heat exchange to flow out, and the second temperature is higher than the first temperature.

Description

Gas storage device, compressor system, refrigeration system and air conditioning unit

technical field

The present disclosure relates to the technical field of air conditioning, and in particular to a gas storage device, a compressor system, a refrigeration system and an air conditioning unit.

Background technique

The best state of the air suspension bearing in the air suspension compressor is that all the air suspension bearings are suspended by gaseous refrigerant. In theory, if the air suspension bearing is all suspended by the gaseous refrigerant, the suspension pressure can be kept consistent everywhere, and the bearing operation is stable. And the precision is high, and there will be no shaft vibration phenomenon.

In the prior art known to the inventor, the air supply device often cannot effectively separate the gas-liquid refrigerant, and the air supply of the suspension bearing is mixed with many small liquid droplets of the refrigerant. Because the air supply is impure, when the small liquid droplets of the refrigerant enter Due to the high temperature of the bearing cavity, when the temperature of the bearing cavity reaches the phase transition point of the refrigerant, the small liquid droplets of the refrigerant will be vaporized into gaseous refrigerant. The gasification of small liquid droplets one by one is like setting off firecrackers, which will cause local pressure explosion. Partial air pressure detonation will cause unstable air pressure in the bearing cavity, which in turn will lead to unstable operation of the bearing and low precision. This will not only shorten the life of the bearing itself, but may also cause interference between the shaft and the comb teeth due to the unstable operation of the shaft. Wear damage.

Utility model content

Embodiments of the present disclosure provide a gas storage device, a compressor system, a refrigeration system, and an air-conditioning unit, capable of reducing the liquid content of a gaseous refrigerant separated from a gas-liquid mixed state refrigerant.

According to a first aspect of the present disclosure, a gas storage device is proposed, comprising:

The housing is provided with a first opening, a second opening and a third opening. The first opening is located in the area near the bottom of the housing, and is used to introduce the first refrigerant in a gas-liquid mixed state at the first temperature; the second The opening is located in the bottom area of the housing for the liquid refrigerant separated from the first refrigerant to flow out; the third opening is located in the top area of the housing for the gaseous refrigerant separated from the first refrigerant to flow out; and

The heat exchanger is located in the housing and installed on the side wall of the housing. The heat exchanger has a first flow channel and a fourth opening and a fifth opening communicating with the first flow channel. The fourth opening is used to pass into the first flow channel The second refrigerant with two temperatures is used to exchange heat with the first refrigerant flowing through the heat exchanger, the fifth opening is used for the second refrigerant after heat exchange to flow out, and the second temperature is higher than the first temperature.

In some embodiments, the heat exchanger is located near the top of the housing.

In some embodiments, the first opening is located on the side wall of the housing and spaced apart from the bottom surface of the housing, the second opening is located on the bottom surface of the housing, and the third opening is located on the top surface of the housing.

In some embodiments, the gas storage device also includes:

The liquid separation baffle is located in the shell and between the heat exchanger and the first opening in the height direction of the gas storage device, configured to separate the liquid refrigerant in the first refrigerant.

In some embodiments, there are multiple liquid separation baffles, the multiple liquid separation baffles are arranged at intervals in the height direction, and two adjacent liquid separation baffles are arranged alternately in the horizontal plane.

In some embodiments, the heat exchanger is a plate structure, and is provided with a second flow channel passing through the heat exchanger in the height direction of the gas storage device, and the second flow channel allows the first refrigerant in a gas-liquid mixed state to pass through.

In some embodiments, ribs are provided on the inner wall of the second channel.

In some embodiments, the gas storage device also includes:

The electric heater is arranged at the bottom area outside the casing, and is configured to selectively heat the liquid refrigerant separated from the first refrigerant at the bottom of the casing.

According to a second aspect of the present disclosure, a compressor system is proposed, comprising:

compressors, including air bearings; and

The gas storage device of the foregoing embodiments;

Wherein, the third opening communicates with the air intake passage of the air suspension bearing and is configured to provide gaseous refrigerant to the air suspension bearing.

According to a third aspect of the present disclosure, a refrigeration system is proposed, comprising:

The compressor system of the foregoing embodiments;

an evaporator configured to receive liquid refrigerant flowing from the second opening; and

The condenser is configured to provide a first refrigerant in a gas-liquid mixed state at a first temperature into the housing through the first opening.

In some embodiments, the condenser is further configured to provide the second refrigerant at the second temperature to the heat exchanger through the fourth opening.

In some embodiments, the condenser is further configured to provide the second refrigerant at the second temperature to the heat exchanger through the fourth opening.

In some embodiments, the refrigeration system further includes: a flasher configured to receive the second refrigerant flowing out of the fifth opening.

According to a fourth aspect of the present disclosure, an air conditioner unit is provided, including the gas storage device of the above embodiment, or the compressor system of the above embodiment, or the refrigeration system of the above embodiment.

Based on the above technical solution, the gas storage device in the embodiment of the present disclosure can separate the pure gaseous refrigerant from the gas-liquid mixed state refrigerant through the combination of gravity separation and superheated gasification, and effectively separate and eliminate the refrigerant in the gas supply. Liquid beads reduce the liquid content of the separated gaseous refrigerant and provide pure refrigerant gas to subsequent equipment to improve the stability of subsequent equipment and system operation.

Description of drawings

The drawings described here are used to provide a further understanding of the present disclosure, and constitute a part of the present application. The schematic embodiments of the present disclosure and their descriptions are used to explain the present disclosure, and do not constitute improper limitations to the present disclosure. In the attached picture:

Fig. 1 is a schematic structural view of some embodiments of a gas storage device of the present disclosure;

Fig. 2 is a structural schematic diagram of some embodiments of the refrigeration system of the present disclosure.

Explanation of reference signs

1. Shell; 2. Heat exchanger; 3. Liquid separator; 4. Compressor; 5. Evaporator; 6. Condenser; 7. Flasher; 8. Throttle valve;

11. First opening; 12. Second opening; 13. Third opening; 21. First flow channel; 22. Second flow channel; 24. Fourth opening; 25. Fifth opening; 41. Air suspension bearing; 81 , the first throttling orifice; 82, the second throttling orifice; A, the first area; B, the second area; C, the third area; D, the fourth area; E, the fifth area; P1, supply Air passage; P2, return air passage; P3, supplementary air passage.

detailed description

The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless specifically stated otherwise. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features which are considered to be preferred or advantageous.

Terms such as "first" and "second" appearing in the present disclosure are only for convenience of description to distinguish different components with the same name, and do not indicate a sequence or a primary and secondary relationship.

In the description of the present disclosure, it should be understood that the orientations or positional relationships indicated by the terms "inner", "outer", "upper" and "lower" are defined based on the housing or the flow channel, etc., and only In order to facilitate the description of the present disclosure, it does not indicate or imply that the referred device must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the protection scope of the present disclosure.

The present disclosure provides a gas storage device, as shown in FIG. 1 and FIG. 2 , including a shell 1 and a heat exchanger 2 . The casing 1 is provided with a first opening 11, a second opening 12 and a third opening 13. The first opening 11 is located near the bottom surface of the casing 1, and is used to pass into the first gas-liquid mixed state of the first temperature. Refrigerant; the second opening 12 is located at the bottom area of the housing 1 for the liquid refrigerant separated from the first refrigerant to flow out; the third opening 13 is located at the top area of the housing 1 for the liquid refrigerant separated from the first refrigerant Gaseous refrigerant flows out.

The heat exchanger 2 is located in the casing 1 and installed on the side wall of the casing 1. The heat exchanger 2 has a first flow channel 21 and a fourth opening 24 and a fifth opening 25 communicating with the first flow channel 21. The fourth opening 24 The second refrigerant of the second temperature is used to pass into the first channel 21 to exchange heat with the first refrigerant flowing through the heat exchanger 2. The fifth opening 25 is used for the second refrigerant after heat exchange to flow out. The temperature is higher than the first temperature.

Wherein, the housing 1 may be a columnar structure, such as a cylindrical or prismatic structure. The top of the casing 1 can be in a tapered structure from bottom to top, and the third opening 13 is arranged at the topmost position in the center. The gaseous refrigerant in the heater 2 converges to the middle area so as to flow out from the third opening 13 more smoothly.

Specifically, as shown in FIG. 1, the first area A of the liquid storage device is located above the liquid refrigerant and below the heat exchanger 2, and the working medium in the first area A is a gas-liquid mixed state of the first temperature. A refrigerant; the second area B is located at the bottom area of the shell 1, and the working medium in the second area B is liquid refrigerant separated from the first refrigerant, and the second area B can be called a liquid refrigerant area; the third area C is located at Between the top of the heat exchanger 2 and the top of the shell 1, the working fluid in the third area C is pure gaseous refrigerant and the liquid content of the working fluid in the third area C is lower than that in the first area A Liquid content, the third area C can be called the gaseous refrigerant area; the fourth area D is the first flow channel 21 of the heat exchanger 2, and the working medium in the fourth area D is the second refrigerant at the second temperature, optionally , the second refrigerant can be in any phase, such as liquid.

Specifically, when the first refrigerant in a gas-liquid mixed state enters the shell 1 through the first opening 11, part of it absorbs heat and becomes gaseous, and the other part releases heat and becomes liquid. Under the action of gravity, the liquid refrigerant sinks to the shell. In the liquid refrigerant zone B at the bottom of body 1, the gaseous refrigerant floats up. During the process of the gaseous refrigerant floating to the gaseous refrigerant zone C, the heat exchanger 2 heats the gaseous refrigerant, and the floating small liquid droplets in the gaseous refrigerant absorb heat and reach a superheated state. Vaporize into a gaseous refrigerant, thereby reducing the liquid content of the gaseous refrigerant.

Specifically, the function of the heat exchanger 2 is to superheat the gaseous refrigerant directly separated from the first refrigerant through the second refrigerant with a higher temperature, so that the floating small liquid droplets in the gaseous refrigerant are heated to a superheated gasification state, Therefore, the pure refrigerant gas is output to the subsequent equipment through the third opening 13, so as to improve the operation stability of the subsequent equipment. Optionally, the heat exchanger 2 can be in any structural form such as a tube heat exchanger or a plate heat exchanger. Optionally, the heat exchanger 2 can be arranged along the horizontal plane, or can be arranged at a certain angle with the horizontal plane. In order to make the gas entering the casing 1 pass through the heat exchanger 2 for heat exchange, the heat exchanger 2 covers the entire cross section of the casing 1 perpendicular to the height direction.

The gas storage device of this embodiment can separate the pure gaseous refrigerant from the gas-liquid mixed state refrigerant through the combination of gravity separation and superheated gasification, effectively separate and eliminate the small refrigerant liquid droplets in the gas supply, and reduce The liquid content of the gaseous refrigerant separated from the liquid mixed state refrigerant can provide pure refrigerant gas to the follow-up equipment to improve the stability of the follow-up equipment and system operation.

In some embodiments, as shown in FIG. 1 , the heat exchanger 2 is arranged in the area near the top of the housing 1 .

In this embodiment, by setting the heat exchanger 2 in the area near the top of the housing 1, the space under the heat exchanger 2 in the housing 1 can be fully utilized to perform gas-liquid separation under the action of gravity, thereby improving the effect of gas-liquid separation. The liquid content of the gaseous refrigerant is further reduced, and when it reaches the top area of the housing 1 , there are fewer liquid droplets contained in the gaseous refrigerant, which can reduce the requirement for the temperature of the second refrigerant.

In some embodiments, as shown in FIG. 1 , the first opening 11 is located on the side wall of the housing 1 and spaced apart from the bottom surface of the housing 1 , the second opening 12 is located on the bottom surface of the housing 1 , and the third opening 13 is located on the top surface of the gas storage tank.

Specifically, the first opening 11 is spaced apart from the bottom surface of the housing 1, which can prevent the liquid refrigerant separated from the first refrigerant from flowing back through the first opening 11, thereby avoiding a larger area of contact between the gas-liquid mixed state refrigerant and the liquid refrigerant. It is beneficial to improve the gas-liquid separation efficiency of the gas-liquid mixed state refrigerant, and optimize the gas-liquid separation effect.

Specifically, the second opening 12 is provided on the bottom surface of the housing 1, and the liquid refrigerant separated from the first refrigerant can flow out through the second opening 12 in time, even when the amount of separated liquid refrigerant is small. Flow out smoothly, so as to avoid excessive accumulation of liquid refrigerant and reduce the gas-liquid separation efficiency of gas-liquid mixed refrigerant.

Similarly, the third opening 13 is provided on the top surface of the housing 1, and the gaseous refrigerant separated from the first refrigerant can flow out through the third opening 13 in time, so as to avoid excessive accumulation of the gaseous refrigerant and reduce the loss of the gas-liquid mixed state refrigerant. Gas-liquid separation efficiency.

In this embodiment, by optimizing the positions of the first opening 11, the second opening 12, and the third opening 13 relative to the housing 1, the gas-liquid separation efficiency of the gas-liquid mixed refrigerant can be improved, and the liquid content of the separated gas refrigerant can be reduced. , Improve the purity of the separated gaseous refrigerant.

In some embodiments, as shown in Figure 1, the gas storage device further includes: a liquid separation baffle 3, located in the housing 1, and located between the heat exchanger 2 and the first opening 11 in the height direction of the gas storage device The room is configured to separate the liquid refrigerant in the first refrigerant.

Specifically, as shown in Figure 1, the first area A of the liquid storage device is located above the liquid refrigerant and below the liquid separation baffle 3, and the working medium in the first area A is in a gas-liquid mixed state at the first temperature. The first refrigerant; the second area B is located in the bottom area of the shell 1, the working medium in the second area B is the liquid refrigerant separated from the first refrigerant, and the second area B can also be called the liquid refrigerant area; the fifth area E is located above the liquid separation baffle 3 and below the heat exchanger 2, the fifth area E can also be called the first gaseous refrigerant area, and the working medium in the fifth area E is the gaseous refrigerant separated from the first refrigerant ; The third area C is located between the top of the heat exchanger 2 and the top of the shell 1. The third area C can also be called the second gaseous refrigerant area. The working medium in the third area C is pure gaseous refrigerant. The liquid content of the gaseous refrigerant in the third area C is lower than the gaseous refrigerant in the fifth area E; the fourth area D is the first flow channel 21 of the heat exchanger 2, and the working medium in the fourth area D is the first temperature of the second temperature Second refrigerant, optionally, the second refrigerant may be in any phase, such as liquid.

Specifically, the gaseous refrigerant separated from the gas-liquid mixed state refrigerant will inevitably be mixed with some small floating refrigerant droplets during the floating process. , most of the relatively large floating refrigerant small liquid droplets will be adsorbed on the liquid separation baffle 3 and separated from the gaseous refrigerant.

Specifically, the liquid separation baffle 3 is located between the heat exchanger 2 and the first opening 11 in the height direction, a part of the first refrigerant in the gas-liquid mixed state absorbs heat and becomes a gaseous state, and the gaseous refrigerant first passes through the separator when it rises. The liquid baffle 3, the small liquid droplets of the larger floating refrigerant will be adsorbed on the liquid separation baffle 3 to reduce the liquid content of the gaseous refrigerant; then the gaseous refrigerant will pass through the heat exchanger 2, and the heat exchanger 2 will carry out the cooling process on the gaseous refrigerant When heated, the floating small liquid droplets in the gaseous refrigerant can absorb heat and reach a superheated state, and all of them are vaporized into gaseous refrigerant, thereby further reducing the liquid content of the gaseous refrigerant.

Optionally, the liquid separation baffle 3 can be set along the horizontal plane, or can be set at a certain angle to the horizontal plane, for example, inclined downward at a certain angle to the horizontal plane to promote the drop of the small liquid droplets on the liquid separation baffle to the liquid refrigerant zone B . Optionally, a turbulent structure such as fins may also be provided on the liquid separation baffle 3 to further promote the separation of small liquid droplets of the floating refrigerant.

The liquid separation baffle 3 of this embodiment can separate a part of floating small liquid droplets during the floating process of the gaseous refrigerant, thereby improving the gas-liquid separation effect of the gas storage device and reducing the liquid content of the gaseous refrigerant.

In some embodiments, as shown in Figure 1, there are multiple liquid separation baffles 3, and the plurality of liquid separation baffles 3 are arranged at intervals in the height direction, and two adjacent liquid separation baffles 3 are staggered in the horizontal plane set up.

Optionally, the plurality of liquid separation baffles 3 may be arranged horizontally, or arranged at a certain angle to the horizontal plane, for example, the plurality of liquid separation baffles 3 are all inclined downward at a certain angle to the horizontal plane.

The plurality of liquid separation baffles 3 in this embodiment are arranged at intervals in the height direction, and two adjacent liquid separation baffles 3 are arranged alternately in the horizontal plane, which can prolong the flow of the gaseous refrigerant in the flow channel of the liquid separation baffles 3 and increase The probability of floating small liquid droplets being adsorbed on the liquid separation baffle 3 improves the gas-liquid separation effect of the gas storage device and reduces the liquid content of the gaseous refrigerant.

In some embodiments, as shown in FIG. 1 , the heat exchanger 2 is a plate structure, and is provided with a second flow channel 22 passing through the heat exchanger 2 in the height direction of the gas storage device. The gaseous refrigerant separated from the first refrigerant passes through.

Optionally, a plurality of second flow channels 22 are distributed on the heat exchanger 2, and the plurality of second flow channels 22 can be evenly arranged. The second flow channel 22 can be arranged vertically to reduce the resistance of gas flowing upward, or it can also be arranged obliquely.

Specifically, the cavity between the outer wall of the heat exchanger 2 and the side wall of the second flow channel 22 forms the first flow channel 21, thereby forming a larger first flow channel 21, which can increase the passage of the second refrigerant. Moreover, the first flow channel 21 can surround the second flow channel 22 in the entire circumferential direction of each second flow channel 22, which can improve the uniformity of heat exchange and accelerate the vaporization of liquid droplets in the gaseous refrigerant. Specifically, the second channel 22 is used to connect the area E and the area C, and is used for passing the gas refrigerant and exchanging heat, so that the liquid content of the gas refrigerant in the area C is lower than the liquid content of the gas refrigerant in the area E.

The second channel 22 of this embodiment allows the gaseous refrigerant separated from the first refrigerant to pass through the heat exchanger 2 for heat exchange, so that the floating small liquid droplets in the gaseous refrigerant are heated to a superheated gasification state, so that the gas storage device Output purer refrigerant gas to subsequent equipment to improve the stability of subsequent equipment operation.

In some embodiments, ribs are provided on the inner wall of the second channel 22 .

The fins in this embodiment can increase the heat exchange efficiency between the gaseous refrigerant in the second flow channel 22 and the second refrigerant in the first flow channel 21, and further reduce the liquid content of the gaseous refrigerant, so as to provide more pure refrigerant to subsequent equipment. of refrigerant gas.

In some embodiments, the gas storage device also includes:

The electric heater is arranged at the bottom area outside the housing 1 and is configured to selectively heat the liquid refrigerant separated from the first refrigerant at the bottom of the housing 1 .

Specifically, the electric heater can be used to heat the liquid refrigerant at the bottom of the shell 1, make the liquid refrigerant evaporate and gasify into gas, and increase the pressure of the gaseous refrigerant in the shell 1, so that the air supply pressure meets the requirements of subsequent equipment . Optionally, electric heaters can be used during the initial start-up of equipment or systems.

The electric heater in this embodiment can increase the air pressure in the housing 1 at the initial stage of device or system start-up, and increase the smoothness and stability of subsequent device start-up.

Secondly, as shown in Figure 2, the present disclosure provides a compressor system, including:

a compressor 4, including an air bearing 41; and

The gas storage device of the foregoing embodiments;

Wherein, the third opening 13 communicates with the air intake passage of the air suspension bearing 41 and is configured to provide gas refrigerant to the air suspension bearing 41 .

Specifically, the compressor 4 is an air suspension compressor. Specifically, the gaseous refrigerant separated from the first refrigerant flowing out of the third opening 13 is supplied to the air suspension bearing of the compressor 4 . More specifically, the function of the heat exchanger 2 of the gas storage device is to superheat the gaseous refrigerant directly separated from the first refrigerant by the second refrigerant with a higher temperature, so that the floating small liquid droplets in the gaseous refrigerant are heated to In the superheated gasification state, pure refrigerant gas is output to the air suspension bearing 41 through the connection between the third opening 13 and the air intake path, so as to improve the operation stability of the compressor 4 .

Optionally, the third opening 13 can be located at the highest position on the top surface of the casing 1, so that the pure gaseous refrigerant in the casing 1 can be supplied to the air suspension bearing 41 of the compressor 4 through the third opening 13 in time for suspending use , so as to avoid excessive accumulation of the gaseous refrigerant and reduce the gas-liquid separation efficiency of the first refrigerant in the gas-liquid mixed state.

The gas storage device in the compressor system of this embodiment can separate the pure gaseous refrigerant from the gas-liquid mixed state refrigerant through the combination of gravity separation and superheated gasification, and effectively separate and eliminate the refrigerant small liquid in the gas supply. balls to maintain the air pressure stability of the bearing chamber of the air suspension bearing 41, reduce bearing vibration and unstable operation, improve the operation stability of the shaft, improve the operation accuracy of the shaft, and then improve the reliability and stability of the compressor 4 and the motor To achieve efficient and stable operation of the compressor system.

Again, as shown in Figure 2, the present disclosure provides a refrigeration system, including:

The compressor system of the foregoing embodiments;

The evaporator 5 is configured to receive the liquid refrigerant flowing out from the second opening 12; and

The condenser 6 is configured to provide a first refrigerant in a gas-liquid mixed state at a first temperature into the casing 1 through the first opening 11 .

Specifically, the refrigerant inside the shell tube of the condenser 6 is layered, and the first refrigerant in a gas-liquid mixed state can be taken out from a position corresponding to the height of the gas-liquid mixed state, such as the middle and lower part of the condenser 6 .

Optionally, the first opening 11 may be located in the middle and lower part of the housing 1, with a certain distance from the bottom surface of the housing 1, so as to introduce the first refrigerant in a gas-liquid mixed state from the condenser 6, and avoid separation from the first refrigerant. The liquid refrigerant returns to the condenser 6 through the first opening 11, which can improve the gas-liquid separation efficiency of the gas-liquid mixed refrigerant, thereby improving the stability and operating efficiency of the refrigeration system.

Optionally, the second opening 12 may be located at the lowest position on the bottom surface of the housing 1, and the liquid refrigerant separated from the first refrigerant can be led back to the evaporator 5 through the second opening 12 in time to continue participating in the refrigeration cycle, thereby avoiding The excessive accumulation of liquid refrigerant reduces the gas-liquid separation efficiency of the gas-liquid mixed refrigerant, further improving the stability of the refrigeration system.

Specifically, the condenser 6 provides the gas storage device with the first refrigerant in a gas-liquid mixed state at the first temperature. After the gas-liquid separation is completed by gravity in the gas storage device, the heat exchanger 2 separates the gaseous refrigerant from the first refrigerant. The refrigerant is superheated, so that the floating small liquid droplets in the gaseous refrigerant are heated to a superheated gasification state, so that the pure refrigerant gas is output to the air bearing 41 of the compressor 4 through the third opening 13; and separated from the first refrigerant The liquid refrigerant flows to the evaporator 5 through the second opening 12, and continues to participate in the refrigeration cycle.

In the refrigeration system of this embodiment, the first refrigerant is provided to the gas storage device through the condenser 6, and the liquid refrigerant flowing out from the second opening 12 is received through the evaporator 5, so that the refrigerant working medium in the refrigeration system can be fully utilized without setting additional The air supply source can effectively improve the stability of the refrigeration system.

In some embodiments, as shown in FIG. 2 , the condenser 6 is further configured to provide the second refrigerant of the second temperature to the heat exchanger 2 through the fourth opening 24 .

Specifically, the refrigerant inside the shell and tube of the condenser 6 is layered, and the second refrigerant can be a high-temperature and high-pressure liquid refrigerant, and the liquid second refrigerant can be taken out from the position corresponding to the height of the liquid refrigerant in the condenser 6, for example, the condenser 6 middle and lower part.

Specifically, the fourth opening belongs to the inlet end of the heat exchanger 2, and the second refrigerant in the condenser 6 can be introduced into the heat exchanger 2 to exchange heat with the gaseous refrigerant with a high liquid content rate, while meeting the heat exchange requirements , without additional power consumption, can save energy consumption and improve economy.

The refrigeration system of this embodiment provides the second refrigerant of the second temperature to the heat exchanger 2 through the condenser 6, which can not only meet the requirement of overheating the gaseous refrigerant directly separated from the first refrigerant, but also save energy consumption and improve economy.

In some embodiments, as shown in FIG. 2 , the refrigeration system further includes: a flasher 7 configured to receive the second refrigerant flowing out from the fifth opening 25 .

Specifically, the fifth opening 25 belongs to the outlet end of the heat exchanger 2, and can lead the second refrigerant whose temperature has been lowered after heat exchange to the flasher 7 for a first-stage throttling flash, thereby improving the energy efficiency of the refrigeration system. More specifically, the small liquid droplets in the housing 1 need to absorb heat to change into a gaseous state. During the heat exchange process, they can absorb the heat of the second refrigerant in the heat exchanger 2, so that the high-temperature and high-pressure liquid in the heat exchanger 2 can be obtained. Great for cooling down.

The refrigerating system of this embodiment guides the second refrigerant at the outlet of the heat exchanger 2 to the flasher 7, which can save energy while satisfying the superheating of the gaseous refrigerant, and can also make full use of the gaseous refrigerant for heat exchange. The temperature of the second refrigerant in the device 2 is lowered, thereby improving the energy efficiency and stability of the refrigeration system.

In some embodiments, as shown in FIG. 2 , the flasher 7 is configured to receive the gaseous refrigerant flowing out from the air suspension bearing 41 .

In this embodiment, the gaseous refrigerant flowing out from the air suspension bearing 41 flows to the flasher 7 for throttling and flashing, which can improve the energy efficiency and stability of the refrigeration system.

In some specific embodiments, as shown in Figure 1 and Figure 2, the refrigeration system includes a gas storage device, a compressor 4, an evaporator 5, a condenser 6, a flasher 7 and a throttling element 8, and the gas storage device includes Shell 1, heat exchanger 2 and liquid separation baffle 3, compressor 4 includes air suspension bearing 41, flasher 7 has a first throttling orifice plate 81 on the inlet branch, and a second throttling orifice on the outlet branch Orifice plate 82.

Specifically, there are three first throttling orifice plates 81, one is located on the connecting passage between the condenser 6 and the flasher 7, one is located on the connecting passage between the fifth opening 25 and the flasher 7, and one is located on the air suspension bearing 41 and the connecting path of the flasher 7; the second throttling orifice 82 is located on the connecting path between the flasher 7 and the evaporator 5, and the refrigerant flowing out from the flasher 7 can flow into the evaporator 5 through secondary throttling to improve system energy efficiency.

Specifically, the refrigeration system includes an air supply passage P1, a return air passage P2, and a supplementary air passage P3, wherein the air supply passage P1 is configured to provide pure gaseous refrigerant to the air suspension bearing 41 through the third opening 13; the return air passage P2 It is configured so that the flasher receives the gaseous refrigerant flowing out from the air suspension bearing 41; the air supply passage P3 is configured so that the flasher 7 supplies air between the first-stage compressor and the second-stage compressor of the compressor 4, thereby improving The compression efficiency of the two-stage compressor can further improve the overall compression efficiency of the compressor 4, thereby improving the overall energy efficiency of the refrigeration system.

More specifically, in this refrigeration system, the temperature of the first opening 11 is about 55°C; the temperature of the second opening 12 is about 45°C; the temperature of the third opening 13 is about 53～55°C; the temperature of the fourth opening 24 is about 65～ About 68°C; the temperature of the fifth opening 25 is about 62-65°C.

Specifically, part of the workflow in the refrigeration system of this embodiment is as follows:

The first refrigerant in the gas-liquid mixture introduced by the condenser 6 enters the casing 1 from the first opening 11; the moment it enters the liquid storage device, part of the first refrigerant in the gas-liquid mixture absorbs heat and becomes a gaseous state, and the other Part of the heat release becomes liquid, and under the action of gravity, the liquid refrigerant sinks to the liquid refrigerant area B at the bottom of the shell 1, and the liquid refrigerant is led back to the evaporator 5 through the second opening 12 to continue participating in the refrigeration cycle; the gaseous refrigerant floats up, The gaseous refrigerant is inevitably mixed with small floating refrigerant droplets during the floating process. When it rises past the liquid separation baffle 3, most of the larger floating refrigerant small liquid droplets will be absorbed into the liquid separation baffle and separated. There may still be some floating small liquid droplets with small volume rising to the first gaseous refrigerant zone E together with the gaseous refrigerant. In the process of passing through the first flow channel 21, the heat exchanger 2 will perform superheating heating and heat exchange on the floating small liquid droplets and the gaseous refrigerant together, so that the floating small liquid droplets absorb heat and reach a superheated state and phase change and all gasify into gaseous refrigerants, thereby reducing The liquid content of the gaseous refrigerant makes the second gaseous refrigerant zone C to be pure gaseous refrigerant, and finally the gaseous refrigerant is supplied to the air suspension bearing 41 of the compressor 4 from the third opening 13 .

In this embodiment, the gaseous refrigerant separated by the gas storage device does not cause local air pressure detonation when the gaseous refrigerant is supplied to the air suspension bearing 41 because there are no small liquid droplets of various refrigerants. Knocking will not cause unstable air pressure in the bearing cavity, thereby avoiding unstable operation and low precision caused by bearing vibration, which can effectively prolong the life of the bearing itself and improve the running accuracy and stability of the shaft, thereby improving the refrigeration system. stability and work efficiency.

Specifically, the high-temperature and high-pressure liquid second refrigerant introduced by the condenser 6 enters the first flow channel 21 of the heat exchanger 2 through the fourth opening 24, and as the gaseous refrigerant in the shell 1 is mixed with floating refrigerant small droplets, the heat exchange The second flow channel 22 of the device 2 is used for heat exchange between the two working fluids. The heat exchanger 2 superheats the floating small liquid droplets and the gaseous refrigerant together. The temperature of the second refrigerant in the first flow channel 21 decreases and passes through the second refrigerant. The five openings 25 flow to the flasher 7 for a first-stage throttling flash, and then continue to participate in the refrigeration cycle, wherein the second refrigerant passes through the first throttling orifice 81 in the process of flowing to the flasher 7 . Specifically, the gaseous refrigerant flowing out of the air suspension bearing 41 also flows to the flasher 7 through the first throttling orifice plate 81 for throttling and flashing to improve the energy efficiency of the system.

The first refrigerant in the gas-liquid mixed state of this embodiment is taken from the condenser 6, without setting an additional gas supply source, which can improve the stability of the refrigeration system while saving costs; the high temperature and high pressure in the heat exchanger 2 of this embodiment The second refrigerant is taken from the condenser 6, which can save energy while meeting heat exchange requirements.

In this embodiment, the cooled second refrigerant flows to the flasher 7 through the fifth opening 25 for throttling flashing, and the gaseous refrigerant flowing out of the air suspension bearing 41 flows to the flasher 7 for flashing, and the liquid in the housing 1 The refrigerant flows to the evaporator through the second opening 12, and the three paths flowing out from the gas storage device can make the refrigerant continue to participate in the refrigeration cycle, thereby improving the energy efficiency and stability of the refrigeration system.

In addition, the present disclosure also provides an air conditioner, including the gas storage device of the above embodiment, or the compressor system of the above embodiment, or the refrigeration system of the above embodiment.

The air conditioner of this embodiment can separate the pure gaseous refrigerant from the gas-liquid mixed state refrigerant by using the gas storage device through the combination of gravity separation and superheated gasification, effectively separating and eliminating the small liquid droplets of the refrigerant in the air supply , reduce the liquid content of the gaseous refrigerant separated from the gas-liquid mixed state refrigerant, and provide pure refrigerant gas to the follow-up equipment (such as air suspension bearing 41, etc.), which can improve the stability of the follow-up equipment operation, and then improve the performance of the air conditioner Operational stability and overall energy efficiency.

In addition, the present disclosure also provides a control method of the refrigeration system based on the above-mentioned embodiments, the gas storage device further includes an electric heater arranged at the outer bottom of the casing 1, and the control method includes:

Turn on the electric heater before the compressor 4 starts, so that the electric heater heats the liquid refrigerant to increase the pressure of the gas refrigerant;

When the pressure of the gaseous refrigerant reaches the first preset pressure, start the compressor 4;

When the pressure of the condenser 6 increases to a second preset pressure, the electric heater is turned off;

Wherein, the second preset pressure is greater than the first preset pressure.

Specifically, the first preset pressure is the pressure that meets the working requirements of the air bearing 41 , and the second preset pressure is the pressure that the condenser 6 should have when it works normally.

Specifically, in the control method, the electric heater is only turned on when the unit is started, because when the unit is not started, there is no high pressure in the condenser 6, and there is no high-pressure gaseous refrigerant in the gas storage device, so air cannot be supplied to the air suspension bearing 41, and the bearing cannot Suspension compressor 4 just can't start to rotate, causes can't set up refrigeration cycle.

Specifically, by arranging an electric heater at the bottom of the gas storage device, it can be used to heat the liquid refrigerant in the second area B at the bottom of the housing 1 before the compressor 4 is started, so that the liquid refrigerant can be evaporated and gasified into a gas refrigerant, improving the The air pressure in the third area C in the shell 1 reaches the first preset pressure, so that the air supply pressure meets the working requirements of the air suspension bearing 41, the compressor 4 starts to rotate, and the normal working pressure is established in the condenser 6, that is, the second Preset pressure, the pressure of the pure gaseous refrigerant flowing out from the third opening 13 of the gas storage device is sufficient to support the air suspension bearing 41, at this time the electric heater is turned off, and there is no need to turn on the electric heater again during the subsequent operation of the whole machine.

The control method of this embodiment can use the liquid refrigerant at the bottom of the gas storage device to quickly increase the pressure of the gas refrigerant at the initial start-up of the refrigeration system, so that the gas supply pressure can meet the working requirements of the air suspension bearing 41, without additional gas supply sources or equipment, and can Improve the smoothness and stability of the compressor system, and then increase the stability of the refrigeration system.

A gas storage device, a compressor system, a refrigeration system and an air-conditioning unit provided in the present disclosure have been introduced in detail above. The principles and implementation modes of the present disclosure are explained by using specific embodiments herein, and the descriptions of the above embodiments are only used to help understand the methods and core ideas of the present disclosure. It should be pointed out that those skilled in the art can make several improvements and modifications to the present disclosure without departing from the principles of the present disclosure, and these improvements and modifications also fall within the protection scope of the claims of the present disclosure.

Claims (14)

1. A gas storage device, comprising:

the refrigerant gas-liquid mixing device comprises a shell (1), wherein a first opening (11), a second opening (12) and a third opening (13) are formed in the shell (1), the first opening (11) is located in a region, close to the bottom surface, of the shell (1) and used for introducing a first refrigerant in a gas-liquid mixing state at a first temperature; the second opening (12) is positioned in the bottom area of the shell (1) and is used for allowing the liquid refrigerant separated from the first refrigerant to flow out; the third opening (13) is positioned in the top area of the shell (1) and is used for allowing the gaseous refrigerant separated from the first refrigerant to flow out; and

the heat exchanger (2) is located in the shell (1) and is installed on the side wall of the shell (1), the heat exchanger (2) is provided with a first flow channel (21), a fourth opening (24) and a fifth opening (25) which are communicated with the first flow channel (21), the fourth opening (24) is used for introducing a second refrigerant with a second temperature into the first flow channel (21) so as to exchange heat with the first refrigerant flowing through the heat exchanger (2), the fifth opening (25) is used for allowing the second refrigerant after heat exchange to flow out, and the second temperature is higher than the first temperature.

2. Gas storage device according to claim 1, characterized in that the heat exchanger (2) is arranged in the area of the housing (1) near the top.

3. Gas storage device according to claim 1, wherein the first opening (11) is located on a side wall of the housing (1) and is spaced from a bottom surface of the housing (1), the second opening (12) is located on the bottom surface of the housing (1), and the third opening (13) is located on the top surface of the housing (1).

4. The gas storage device of claim 1, further comprising:

the liquid separation baffle (3) is positioned in the shell (1), is positioned between the heat exchanger (2) and the first opening (11) in the height direction of the gas storage device, and is configured to separate liquid refrigerants in the first refrigerants.

5. The gas storage device according to claim 4, wherein a plurality of liquid separation baffles (3) are provided, the plurality of liquid separation baffles (3) are arranged at intervals in the height direction, and two adjacent liquid separation baffles (3) are staggered in the horizontal plane.

6. Gas storage device according to any one of claims 1 to 5, wherein the heat exchanger (2) is of a plate-type structure, and a second flow passage (22) is provided that extends through the heat exchanger (2) in a height direction of the gas storage device, the second flow passage (22) allowing gaseous refrigerant separated from the first refrigerant to pass therethrough.

7. Gas storage device according to claim 6, characterized in that the inner walls of the second flow channels (22) are provided with fins.

8. A gas storage device according to any of claims 1 to 5, further comprising:

the electric heater is arranged in the bottom area outside the shell (1) and is configured to selectively heat the liquid refrigerant separated from the first refrigerant at the bottom of the shell (1).

9. A compressor system, comprising:

a compressor (4) comprising an air bearing (41); and

a gas storage device according to any one of claims 1 to 8;

wherein the third opening (13) is communicated with an air inlet path of the air suspension bearing (41) and is configured to provide gaseous refrigerant to the air suspension bearing (41).

10. A refrigeration system, comprising:

the compressor system of claim 9;

an evaporator (5) configured to receive the liquid refrigerant flowing out of the second opening (12); and

a condenser (6) configured to supply a first refrigerant in a gas-liquid mixed state at the first temperature into the casing (1) through the first opening (11).

11. A refrigeration system according to claim 10, characterized in that the condenser (6) is further configured to provide a second refrigerant of the second temperature to the heat exchanger (2) through the fourth opening (24).

12. The refrigeration system as recited in claim 10 or 11, further comprising: a flash tank (7) configured to receive the second refrigerant flowing out of the fifth opening (25).

13. A refrigeration system according to claim 12, characterized in that the flash tank (7) is configured to receive the gaseous cooling medium flowing out of the aerostatic bearing (41).

14. An air conditioning unit comprising a gas storage device according to any one of claims 1 to 8, or a compressor system according to claim 9, or a refrigeration system according to any one of claims 10 to 13.

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